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<FONT color="green">001</FONT>    <a name="line.1"></a>
<FONT color="green">002</FONT>    /*<a name="line.2"></a>
<FONT color="green">003</FONT>     * Copyright (C) 2011 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<FONT color="green">004</FONT>     *<a name="line.4"></a>
<FONT color="green">005</FONT>     * $Id: ContextCleanupListener.html 61 2011-03-10 15:40:08Z archie.cobbs $<a name="line.5"></a>
<FONT color="green">006</FONT>     */<a name="line.6"></a>
<FONT color="green">007</FONT>    <a name="line.7"></a>
<FONT color="green">008</FONT>    package org.dellroad.stuff.servlet;<a name="line.8"></a>
<FONT color="green">009</FONT>    <a name="line.9"></a>
<FONT color="green">010</FONT>    import java.sql.Driver;<a name="line.10"></a>
<FONT color="green">011</FONT>    import java.sql.DriverManager;<a name="line.11"></a>
<FONT color="green">012</FONT>    import java.util.Enumeration;<a name="line.12"></a>
<FONT color="green">013</FONT>    <a name="line.13"></a>
<FONT color="green">014</FONT>    import javax.servlet.ServletContextEvent;<a name="line.14"></a>
<FONT color="green">015</FONT>    <a name="line.15"></a>
<FONT color="green">016</FONT>    import org.slf4j.Logger;<a name="line.16"></a>
<FONT color="green">017</FONT>    import org.slf4j.LoggerFactory;<a name="line.17"></a>
<FONT color="green">018</FONT>    import org.springframework.web.util.IntrospectorCleanupListener;<a name="line.18"></a>
<FONT color="green">019</FONT>    <a name="line.19"></a>
<FONT color="green">020</FONT>    /**<a name="line.20"></a>
<FONT color="green">021</FONT>     * Clears references that can cause container memory leaks on Web container class unloading.<a name="line.21"></a>
<FONT color="green">022</FONT>     *<a name="line.22"></a>
<FONT color="green">023</FONT>     * @see &lt;a href="http://opensource.atlassian.com/confluence/spring/pages/viewpage.action?pageId=2669"&gt;Spring Wiki Discussion of<a name="line.23"></a>
<FONT color="green">024</FONT>     *      ClassLoader Memory Leaks&lt;/a&gt;<a name="line.24"></a>
<FONT color="green">025</FONT>     * @since 1.0.49<a name="line.25"></a>
<FONT color="green">026</FONT>     */<a name="line.26"></a>
<FONT color="green">027</FONT>    public class ContextCleanupListener extends IntrospectorCleanupListener {<a name="line.27"></a>
<FONT color="green">028</FONT>    <a name="line.28"></a>
<FONT color="green">029</FONT>        protected final Logger log = LoggerFactory.getLogger(getClass());<a name="line.29"></a>
<FONT color="green">030</FONT>    <a name="line.30"></a>
<FONT color="green">031</FONT>        /**<a name="line.31"></a>
<FONT color="green">032</FONT>         * Unregisters any JDBC drivers registered under the current class loader after<a name="line.32"></a>
<FONT color="green">033</FONT>         * first invoking the superclass version of this method.<a name="line.33"></a>
<FONT color="green">034</FONT>         */<a name="line.34"></a>
<FONT color="green">035</FONT>        @Override<a name="line.35"></a>
<FONT color="green">036</FONT>        public void contextDestroyed(ServletContextEvent event) {<a name="line.36"></a>
<FONT color="green">037</FONT>            try {<a name="line.37"></a>
<FONT color="green">038</FONT>                super.contextDestroyed(event);<a name="line.38"></a>
<FONT color="green">039</FONT>                for (Enumeration&lt;Driver&gt; e = DriverManager.getDrivers(); e.hasMoreElements(); ) {<a name="line.39"></a>
<FONT color="green">040</FONT>                    Driver driver = e.nextElement();<a name="line.40"></a>
<FONT color="green">041</FONT>                    if (driver.getClass().getClassLoader() == getClass().getClassLoader()) {<a name="line.41"></a>
<FONT color="green">042</FONT>                        DriverManager.deregisterDriver(driver);<a name="line.42"></a>
<FONT color="green">043</FONT>                    }<a name="line.43"></a>
<FONT color="green">044</FONT>                }<a name="line.44"></a>
<FONT color="green">045</FONT>            } catch (Throwable e) {<a name="line.45"></a>
<FONT color="green">046</FONT>                log.error("exception cleaning up servlet context", e);<a name="line.46"></a>
<FONT color="green">047</FONT>            }<a name="line.47"></a>
<FONT color="green">048</FONT>        }<a name="line.48"></a>
<FONT color="green">049</FONT>    }<a name="line.49"></a>




























































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